The Milwaukee M18 High Output 6.0Ah Battery and 5.0Ah Battery are power tool accessories designed for optimal performance and efficiency. These lithium-ion batteries have a voltage of 18V, making them compatible with various Milwaukee tools. The sleek black color and model number 48-11-1856 ensure easy identification and compatibility. With the high capacity of 6Ah and 5Ah, these batteries provide long-lasting power for extended use, making them a reliable choice for professionals and DIY enthusiasts alike.